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If -3 is a root of both the Quadratic equations 2x2 + px – 15 = 0, and p(x2 + x) + q = 0, then the value of q if the equation containing it has equal roots is
  • a)
    1/2
  • b)
    1/4
  • c)
    14
  • d)
    2
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
If -3 is a root of both the Quadratic equations 2x2 + px – 15 = ...
-3 is root of both
2(9) -3p -15 = 0
p = 1
and
second equation has two equal roots so, 
b2-4ac = 0
p= 4pq
p = 4q
q = 1/4
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If -3 is a root of both the Quadratic equations 2x2 + px – 15 = 0, and p(x2 + x) + q = 0, then the value of q if the equation containing it has equal roots isa)1/2b)1/4c)14d)2Correct answer is option 'B'. Can you explain this answer?
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If -3 is a root of both the Quadratic equations 2x2 + px – 15 = 0, and p(x2 + x) + q = 0, then the value of q if the equation containing it has equal roots isa)1/2b)1/4c)14d)2Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about If -3 is a root of both the Quadratic equations 2x2 + px – 15 = 0, and p(x2 + x) + q = 0, then the value of q if the equation containing it has equal roots isa)1/2b)1/4c)14d)2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If -3 is a root of both the Quadratic equations 2x2 + px – 15 = 0, and p(x2 + x) + q = 0, then the value of q if the equation containing it has equal roots isa)1/2b)1/4c)14d)2Correct answer is option 'B'. Can you explain this answer?.
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